| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| BAHAMAS | Accession | 30/12/1943 | |
| CANADA | Signature | 13/12/1937 | |
| CANADA | Ratification | 22/12/1938 | |
| CUBA | Signature | 13/12/1937 | |
| CUBA | Ratification | 12/01/1938 | |
| DOMINICAN REPUBLIC | Signature | 13/12/1937 | |
| DOMINICAN REPUBLIC | Ratification | 05/11/1941 | |
| HAYTI | Signature | 13/12/1937 | |
| HAYTI | Ratification | 27/06/1938 | |
| MEXICO | Signature | 13/12/1937 | |
| MEXICO | Ratification | 29/03/1940 | |
| UNITED KINGDOM | |||
| UNITED STATES OF AMERICA | Signature | 13/12/1937 | |
| UNITED STATES OF AMERICA | Ratification | 21/07/1938 |